TW202301747A - Receptacle connector - Google Patents

Abstract

An electrical connector includes a unitary insulative housing having a tongue and a cavity; two rows of terminals molded in the insulative housing while exposing to two opposite surfaces of the tongue, respectively, each row of terminals include plural signal terminals and plural ground terminals, the ground terminals are exposed to the cavity. A conductive member is molded in the cavity to be in contact with the ground terminals. The mold method of the conductive plastic and the terminals not only increase electric performance of the connector, but also increase mechanical steady of the connector.

Description

socket connector

The invention relates to a socket connector, in particular to a low-profile high-frequency connector.

U.S. Patent Publication No. 2021/0050683 discloses an electrical connector, which includes a body and two rows of terminals. The body is provided with opposite side walls and a cavity between the side walls. The two rows of terminals are arranged in the cavity and adjacent to the side walls. The two terminal modules and the resonance damping device are accommodated in the cavity. The resonance damping device is located between the two rows of terminals. It is fixed in the body and abuts against the ground terminal. US Patent No. 10,777,921 also discloses a conductive plastic. However, these resonance damping devices and conductive plastics still have problems in actual products.

Therefore, it is necessary to improve the existing socket connector.

The object of the present invention is to provide a socket connector which can provide high frequency electrical performance.

The purpose of the present invention is achieved through the following technical solutions: a socket connector, including an integral insulating body, two rows of terminals and conductive injection parts, the insulating body is provided with tongue plates and cavities, and the terminals are formed by injection molding. The method is fixed on the insulating body, and the terminals are exposed on two opposite outer surfaces of the tongue plate, each row of terminals includes signal terminals and ground terminals, wherein the ground terminals are exposed in the cavity, and the conductive injection part It is fixed in the cavity by an integral molding method and contacts with the ground terminal.

Another object of the present invention is achieved by the following technical solutions: a socket connector installed on a circuit board, the socket connector includes a base body, two rows of terminals fixed on the base body, and a socket covering the base body Metal shell; the seat body includes a bottom wall, four vertical walls and a tongue plate, a docking cavity is formed between the vertical wall and the tongue plate, and the docking cavity passes through the butt joint provided on the seat body upwards from the bottom wall On the surface, the four vertical walls include two opposite longitudinal walls and two opposite transverse walls, the terminal includes a vertical portion and a welding portion, the welding portion extends out of the bottom wall, and the vertical portion is provided There is a contact portion exposed on the outer surface of the tongue plate; the metal shell includes two longitudinal wall panels and two transverse wall panels corresponding to the longitudinal wall and the transverse wall; the two transverse wall panels and one of them The elongated wall boards protrude upwards from the butt surface of the seat body, and one of the elongated wall boards is provided with a locking hole.

Compared with the prior art, the conductive injection part of the present invention can enhance the overall strength of the plastic body and terminals of the socket connector while improving the high-frequency performance of the socket connector. The metal shell of the present invention can better strengthen the holding force during docking.

Referring to the first figure to the thirteenth figure, the electrical connector assembly includes a receptacle connector 10 and a plug connector 50 that are docked with each other. The rear end of the plug connector 50 is connected to two rows of cables 90, which are in the form of a line end connector. The receptacle connector 10 is mounted on a circuit board 200 in the form of a board header connector. The receptacle connector 10 is not designed with a pure cantilever tongue structure, which is mainly used to reduce the overall height of the connector; the plug connector 50 is designed with a cantilever beam structure, which is used to reduce the overall docking height and provide sufficient The scratching force, the specific structure will be described below.

Especially referring to the third to fifth figures, the receptacle connector 10 includes an integral insulating body 20 and two rows of terminals 30 . The insulating body 20 is provided with a tongue 22 , a cavity 24 , and a conductive plastic 40 . The tongue plate 22 protrudes upwards, the cavity 24 is recessed upwards from the bottom surface 201 of the insulating body, and the two rows of terminals 30 are embedded in the insulating body 20 by injection molding. The terminals are exposed on two opposite outer surfaces 221 of the tongue plate. Each row of terminals 30 includes a plurality of signal terminals 32 and a plurality of grounding terminals 34. As shown in the second figure, each terminal 30 includes a vertical portion 301 and a welding portion 302 protruding from the bottom surface 201 of the insulating body. A part of the outer surface 303 is exposed on the opposite outer surface 221 of the tongue plate to form the contact surface 303 . It can be clearly seen from the fourth figure that the vertical portion 301 of the signal terminal is buried in the insulating body 20, the ground terminal is exposed in the cavity 24, and the inner surface 304 of the vertical portion 301 of the ground terminal opposite to the contact surface is exposed in the cavity 24. Inside. The conductive plastic 40 is injected into the cavity 24 for electrically connecting the ground terminal 34 . Specifically, it can be seen that the cavity 24 includes a longitudinal cavity 241 and a plurality of transverse cavities 242 located on two sides of the longitudinal cavity. The conductive plastic 40 is matched with the shape of the cavity, and includes a lengthwise plate body 41 and a plurality of transverse convex ribs 42 extending from the lengthwise plate body. The transverse rib 42 is accommodated in the transverse cavity 242 , and the transverse rib 42 abuts against the inner surface 304 of the vertical portion 301 of the ground terminal 34 . In other embodiments, the conductive plastic 40 can be replaced by conductive metal ink or conductive ink, and the conductive ink flows into the cavity 24 and then hardens to form. Therefore, the conductive plastic 40 and the conductive ink can be collectively referred to as the conductive input element here.

The receptacle connector 10 further includes a shield portion 28 and a metal shell 29, the shield portion 28 is made of insulating material, the shield portion 28 surrounds the insulating body 20, and the tongue plate 22 between the shield portion 28 and the insulating body 20 A mating cavity 281 is formed, and the shield portion 28 and the insulating body 20 jointly form the seat body 20A of the socket connector 10 for mating with the mated plug connector 50 . The shell 29 is fixed on the shield part 28 and surrounds the shield part 28 to play a shielding effect. As shown in FIG. 3 , the shield part 28 may be further provided with related structures, such as ribs 282 , which are used to interfere and fix the insulating body 20 when the insulating body 20 is installed into the shield part. The shell 29 can be provided with relevant structures, such as protrusions 292 and barbs 294 , for fixing the shell 29 to the shield portion 28 . The signal terminals 32 can be arranged in pairs for transmitting differential pair signals to form a differential terminal pair. Referring to the first figure, the metal shell 29 protrudes upwards from the top surface 202 of the seat body 20A, the top surface of the seat body constitutes the docking surface with the plug connector 50, and the metal shell 29 is also formed with a locking hole 296 .

The conductive plastic 40 is provided with two rows of branches, and its structure is a transverse convex rib 42, and the transverse convex rib 42 is aligned with the corresponding grounding terminal 34, so that after the conductive plastic 40 is injected into the cavity 24, the conductive plastic is in contact with all the grounding terminals 34 , forming an electrical connection. Each ground terminal 34 has a contact portion (a part of the vertical portion), and the conductive plastic has a top surface 402, and the top surface 402 is substantially flush with the upper end of the contact portion (ie, the top surface of the vertical portion), as shown in FIG. 2 It can be clearly seen that the conductive plastic 40 is used to improve the integrity of the transmission signal, that is, the conductive plastic 40 is flush with or higher than the vertical portion of the terminal, and covers the entire vertical portion of the ground terminal.

The manufacturing method of the receptacle connector 10 includes the following steps. First, the insulating material and the two rows of terminals are formed into an insulating body 20 and a terminal 30 integrated with each other by injection molding. The insulating body includes a tongue plate 22 and a cavity 24. The terminal 30 is exposed on the two outer surfaces 221 of the tongue plate, and then the conductive plastic material is injected into the cavity 24, and the conductive plastic 40 electrically connects the ground terminals in the terminals together.

Referring to Figures 6 to 11, the plug connector 50 includes a terminal assembly 60 connected to a cable 90 at the rear end, an upper cover 70 , a lower cover 75 , a drawstring 80 , a locking member 85 and a glue 95 . The cables 90 are arranged in two rows up and down. The terminal assembly 60 includes a front terminal unit 62 , a rear terminal unit 64 , an upper grounding member 66 for fixing the upper cables to the front terminal unit 62 , and a lower grounding member 68 for fixing the lower cables to the rear terminal unit 64 . Each front and rear terminal unit is manufactured by injection molding. The front terminal unit 62 includes an insulating plate 621 and a row of terminals 623 embedded in the insulating plate 621 . The terminals 623 include a contact portion 6231 exposed on the rear side of the insulating plate 621 and a connecting portion 6232 exposed on the upper side of the insulating plate. The wire core 91 of the cable 90 is connected to the connecting portion 6232 of the signal terminal, and the upper grounding member 66 is provided with a plurality of fingers 662 extending forward from the front end of the upper grounding member 66, which are connected to the connecting portion of the corresponding grounding terminal. 6232. At the same time, the upper grounding piece is placed on the shielding layer 92 of the cable to form an electrical connection. The structures of the rear terminal unit 64 and the lower grounding member are substantially the same as those of the front terminal unit and the upper grounding member. The front and rear terminal units 62 and 64 are mounted together by the matching positioning posts 622 and positioning holes 642 , and the positioning posts 623 and the positioning holes 642 are aligned and matched along the front and rear directions. The lower grounding member 64 is positioned and fixed by cooperating with the positioning columns 644 and 646 of the rear terminal unit through the two positioning holes provided therein, and the grounding member is fixed on the rear terminal unit. The positioning and fixing method of the upper grounding member and the front terminal unit similar. Each grounding member is provided with a plurality of fingers 662, 682, which extend forward from the front end of the grounding member and connect to corresponding grounding terminals. The cable 90 can be a coaxial twisted pair structure, which can be directly soldered to a corresponding differential terminal pair formed by a pair of signal terminals 32 , and the shielding layer 92 thereof contacts the ground terminal 34 . After the grounding element fixes the cable, the colloid 95 is injected into the terminal assembly to further fix the above assembly. The upper and lower covers 70, 75 are assembled on the outside of the terminal assembly, the locking piece is fixed on the upper cover, and the drawstring is installed on the locking piece.

As mentioned above, after the receptacle connector is assembled, it includes the seat body 20A and two rows of terminals 30 . Referring to the second figure and the fourteenth figure, the seat body 20A includes a bottom wall 251, four vertical walls and the tongue plate 22, a docking cavity 281 is formed between the vertical walls and the tongue plate, and the docking cavity 281 is formed from the bottom. The walls penetrate upwards, and the four vertical walls include two opposite longitudinal walls 252 and two opposite transverse walls 253 . The contact surfaces of the vertical portions 301 of the two rows of terminals are then provided on the two opposite outer surfaces 221 of the tongue plate. The metal shell 29 comprises four vertical plates that are close to the outside of the vertical wall of the seat body, which are respectively two longitudinal wall plates 2951, 2954 and two transverse wall plates 2952, 2953, wherein respectively attached to a longitudinal wall 252 and a transverse wall One of the longitudinal wall plates 2951 and two transverse wall plates 2952, 2953 of 253 extend upwards and exceed the top surface 202 of the seat body (that is, the butt surface of the seat body), and the longitudinal wall plate 2951 is provided with a locking hole 296, and the other one The elongated wall plate 2954 also goes upwards beyond the top surface 202 of the base body, but it is further provided with a elongated slot 2955, and the top edge of the elongated slot 2955 is substantially flush with the top edge of the base body 20A. It can be seen from the drawing that the transverse wall plate is divided into two parts, the top surfaces of which are respectively flush with the corresponding longitudinal wall plates. As shown in Figures 6 to 7, the plug connector 5 is formed with a docking portion 51, and the docking portion 51 includes two opposite long walls 511 and two opposite short walls 512 connected to each other, and is located between the long walls and the short walls. Two rows of terminals 623 are disposed on the inner wall of the long wall 511 . It can be seen from the foregoing description that the socket connector 10 adopts flat terminals 30 and the plug connector adopts elastic bent terminals. In the mating direction, the height of the insulating body of the socket connector is relatively low, which can reduce the height of the circuit board after mating. The elongated extension of the metal shell can increase the holding force during docking, and the elongated slot 2955 allows the cable 90 of the plug connector to extend from this part. .

The above-mentioned embodiments are preferred implementation modes of the present invention. Rather than all the implementation modes, any equivalent changes to the technical solution of the present invention adopted by persons of ordinary skill in the art by reading the description of the present invention are covered by the claims of the present invention.

10: socket connector 20: Insulation body 20A: seat body 201: Bottom 202: top surface/butt surface 22: tongue plate 221: outer surface 24: cavity 241: Longitudinal cavity 242: Horizontal cavity 251: bottom wall 252: Longitudinal wall 253: Transverse wall 28: shield part 281: Docking cavity 282: convex rib 29: metal case 292: Convex 294: Barbs 2951, 2954: Longitudinal siding 2952, 2953: Transverse siding 2955: Longitudinal slotting 296: lock hole 30: terminal 301: vertical part 302: welding part 303: Outer surface 304: inner surface 32: Signal terminal 34: Ground terminal 40: Conductive plastic 402: top surface 41: Longitudinal plate body 42: Transverse convex rib 50: plug connector 511: Longitudinal wall 512: Transverse wall 513: containment cavity 60:Terminal assembly 62: Front terminal unit 621: insulation board 622: positioning column 623: terminal 6231: contact part 6232: connection part 64: rear terminal unit 642: positioning hole 644, 646: positioning column 66: Upper grounding piece 662: fingers 68: Lower grounding piece 682: finger 70: Upper cover body 75: Lower cover body 80: drawstring 85: Locking parts 851:Lock head 90: cable 91: wire core 92: masking layer 95: colloid 200: circuit board

The first figure is a three-dimensional view of the electrical connector combination of the present invention, wherein the socket and the plug connector are ready for docking, and the socket connector is installed on the circuit board;

The second figure is the cross-sectional view of the two connectors in the first figure after docking;

The third figure is a three-dimensional exploded view of the socket connector in the first figure;

The fourth picture is the three-dimensional exploded view of the insulating body and the conductive plastic in the third picture;

The fifth figure is the top view of the fourth figure;

The sixth figure is a perspective view of the plug connector in the second figure;

The seventh figure is a perspective view from another angle of the sixth figure;

Figure 8 is an exploded perspective view of Figure 6; and

The ninth figure is a three-dimensional exploded view from another angle of the eighth figure.

Figure 10 is a three-dimensional exploded view of the terminal module in Figure 8, and a partially enlarged view.

The eleventh figure is a three-dimensional exploded view from another angle of the tenth figure.

The twelfth figure is a further decomposed perspective view of the tenth figure.

The thirteenth figure is a perspective view from another angle of the twelfth figure.

Figure 14 is a perspective view of the socket connector in Figure 1 .

20: Insulation body

22: tongue plate

24: cavity

241: Longitudinal cavity

242: Horizontal cavity

30: terminal

304: inner surface

32: Signal terminal

34: Ground terminal

40: Conductive plastic

402: top surface

41: Longitudinal plate body

42: Transverse convex rib

Claims (10)

A socket connector, comprising an integral insulating body, two rows of terminals and a conductive injection part, the insulating body is provided with a tongue plate and a cavity; wherein, the terminals are fixed on the insulating body by injection molding, and The terminals are exposed on two opposite outer surfaces of the tongue plate, and each row of terminals includes signal terminals and ground terminals, wherein the ground terminals are exposed in the cavity, and the conductive injection part is fixed on the cavity and in contact with the ground terminal. The receptacle connector according to claim 1, wherein the conductive injection part is a conductive plastic injected into the cavity by injection molding, or a conductive ink injected into the cavity and hardened. The receptacle connector according to claim 1, wherein the receptacle connector includes a shield portion, the shield portion surrounds the insulating body, and a docking cavity is formed between the shield portion and the tongue plate, The socket connector includes a metal shell that is fixed and surrounds the outer side of the shield part. The receptacle connector according to claim 3, wherein the metal shell extends upwards beyond the top surface of the shield portion, and the metal shell is further provided with a locking hole for locking a pair of plug connectors with each other . The socket connector according to claim 2, wherein the terminal includes a vertical portion and a welding portion, the outer surface of the vertical portion is exposed on the outer surface of the tongue plate to form a contact surface; the signal terminal is vertical The inner surface of the portion opposite to the outer surface is embedded in the insulating body, and the inner surface of the ground terminal opposite to the outer surface is exposed in the cavity and contacts the conductive plastic. The receptacle connector according to claim 5, wherein the conductive injection part includes a longitudinal plate body and transverse ribs located on both sides of the longitudinal plate body, and the transverse ribs abut against the ground terminal The inner surface. The receptacle connector according to claim 6, wherein the top surface of the conductive injection member is not lower than the top surface of the vertical portion of the terminal. A socket connector, which is installed on a circuit board, the socket connector includes a base body, two rows of terminals fixed on the base body, and a metal shell covering the base body; the base body includes a bottom wall, four The vertical wall and the tongue plate form a docking cavity between the vertical wall and the tongue plate. The docking cavity passes through the docking surface provided on the seat from the bottom wall upwards. The four vertical walls include two opposite One longitudinal wall and two opposite transverse walls, the terminal includes a vertical portion and a welding portion, the welding portion extends out of the bottom wall, and the vertical portion is provided with a contact exposed on the outer surface of the tongue plate part; the metal shell includes two longitudinal wall panels and two transverse wall panels corresponding to the longitudinal wall and the transverse wall; wherein, the two transverse wall panels and one of the longitudinal wall panels protrude upwards The butt joint surface of the seat body, and one of the longitudinal wall panels is provided with a locking hole. The receptacle connector according to claim 8, wherein the other longitudinal wall plate extends upwards and protrudes from the mating surface of the seat, and the other longitudinal wall is further provided with a Uniform lengthwise slotting. The receptacle connector as claimed in claim 8, wherein the transverse wall is divided into two parts, the top surfaces of which are respectively flush with the corresponding longitudinal walls.

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